This filter says cleanable but should it still be replaced every year?

Yes, you should still replace it yearly.

My filter says Imperial Sterasyl and is used to remove bacteria and protozoan cysts while rafting. It is 10 x 2 1/2 on ceramic and 10 x 3 on the outside of the rubber ends. The filter needs to remove nominal pore size of 0.2 microns. Is this filter 3 inches on outside of rubber and remove pore size of 0.2 microns Thanks for your help Dwight

Yes, this one will fit in your system it is actually better than the Imperial Sterasyl as that is just a ceramic shell where this one has that and media inside to filter a wide range of other contaminants.

What is the actual dimension of this filter? Also does it help with odors?

This fits into a standard 10' housing. so they are 2.5 X 10 inches. Yes it does filter out odors

For one person and average use, how often should this filter be changed?

We recommend 1,000 gallons or yearly, which ever comes first.

Do you have a ceramic filter that removes Naefleria fowleri (brain eating amoeba). I live in Louisiana and this has become present in our municipal water.

All of the ceramic filters we offer will filter naegleria fowleri. You can also use a UV Light. 

Naegleria fowleri infects people when water containing the ameba enters the body through the nose. Infection is rare and typically occurs when people go swimming or diving in warm freshwater places, like lakes and rivers. Very rarely, infections have been reported when people submerge their heads, cleanse their noses during religious practices, or irrigate their sinuses (nose) using contaminated tap or faucet water.

Here are a couple links for more info

Tap & Faucet Water

Prevention & Control

I have an old thewaterexchange under sink filter system. Will the ceramic filter fit in the housing?

Yes, it should fit, as it appears to be a standard 10-inch housing.

Is there a need to clean this filter on a regular basis? (Every month or so?)

You only need to clean it when the water flow slows way down.

Hello Would this work for Pro/max one Counter water filter? If It wont fit into my filter is this item returnable?

Yes, it will fit  We have lots of customers using these now that the ProMax filter has been discontinued.

I installed this, and the outside of the ceramic is now covered in brown sludge, a few days/weeks after installation. Can I clean the ceramic outside with a mildly abrasive scrubber?

Yes, you can use a soft brush or a Scotch-Brite green pad and scrub it under running cold water.

Would like to confirm that this is a completely compatible replacement for the Promax 34rf-s7 filter. What is the typically recommended replacement schedule ... annually, every 6 months, etc.? This would be for a household of two adults.

I am not sure of that item number, but it will fit in the ProOne ProMax and Cold Stream countertop and under-sink filter systems. They should be replaced annually.

How long does the filter last with lots of use and how often should it be replaced?

Filters should be replaced annually or at a capacity of 1,400 gallons, whichever comes first

Is this a replacement for a 10" CF-AMB9S?

No, here is the link to that one.

Aquacera AquaMetix Block Replacement Filter